Oracle数据库查询被锁的表以及解锁表操作

1.查询引起了锁表的原因：
select l.session_id sid,
s.serial#,
l.locked_mode,
l.oracle_username,
s.user#,
l.os_user_name,
s.machine,
s.terminal,
a.sql_text,
a.action
from v$sqlareaa,v$session s, v$locked_object l
where l.session_id = s.sid
and s.prev_sql_addr = a.address
order by sid, s.serial#;

2.查询被锁的表：
select b.owner,b.object_name,a.session_id,a.locked_mode from v$locked_object a,dba_objects b where b.object_id = a.object_id;

3.查看是哪个session引起的：
select b.username,b.sid,b.serial#,logon_time from v$locke{d}_{o}bjecta,v$session b where a.session_id = b.sid order by b.logon_time;

4.杀掉对应进程即解锁：
–其中99是sid 178是serial#
alter system kill session ‘99,178’;